Problem with Stand By Mode

[Sebastianhoeing]

I have activated the standard 15 minutes to stand by time in my Kubuntu 26.04. When returning to the PC, it always crashed. This time I took a picture from the error message... Maybe somebody can help. I have a PC with i5-9600K, nvivdia GTX 1660ti, nothing special, nothing new or too old.

[skyfishgoo]

have you installed any proprietary nvidia drivers, or is this with the kernel drivers from a fresh install on bare metal?

[Sebastianhoeing]

Version 580.142

[Sebastianhoeing]

AI tells me, that it is also an error of the snap version of Spotify...

[skyfishgoo]

the nvidia website also tells me you should be using the 595 drivers, so i would back out however you install that driver and install the correct one, or just go with the kernel drivers unless you need the extra performance for something.

[Sebastianhoeing]

It is not Spotify. I think the Nvidia card/driver is the source of the problem. I deinstalled Spotify, but Stand by Mode still not working. It's a pity, because with Linux Mint never had issues. I attach the last error message.

[die.boer]

try running this script in the terminal , it'll set you back to the 550 driver ,among other things ...

bash -c '
set -e

echo "[1/6] Removing all NVIDIA drivers..."
sudo apt purge -y "nvidia*" || true
sudo apt autoremove -y --purge

echo "[2/6] Installing stable driver (550)..."
sudo apt update
sudo apt install -y nvidia-driver-550

echo "[3/6] Configuring NVIDIA power management..."
echo "options nvidia NVreg_PreserveVideoMemoryAllocations=1" | sudo tee /etc/modprobe.d/nvidia-power.conf
echo "options nvidia NVreg_TemporaryFilePath=/var/tmp" | sudo tee -a /etc/modprobe.d/nvidia-power.conf

echo "[4/6] Disabling GSP firmware (stability)..."
echo "options nvidia NVreg_EnableGpuFirmware=0" | sudo tee /etc/modprobe.d/nvidia-gsp.conf

echo "[5/6] Setting safe sleep mode (s2idle)..."
sudo sed -i '\''s/GRUB_CMDLINE_LINUX_DEFAULT=.*/GRUB_CMDLINE_LINUX_DEFAULT="quiet splash mem_sleep_default=s2idle"/'\'' /etc/default/grub

echo "[6/6] Rebuilding system..."
sudo update-initramfs -u
sudo update-grub

echo ""
echo " Done. Reboot now."
'​

REBOOT

[skyfishgoo]

i would just do step 1/6 and see if it will reboot